hugoWebsite/node_modules/rxjs/dist/esm/internal/operators/switchScan.js

12 lines
464 B
JavaScript

import { switchMap } from './switchMap';
import { operate } from '../util/lift';
export function switchScan(accumulator, seed) {
return operate((source, subscriber) => {
let state = seed;
switchMap((value, index) => accumulator(state, value, index), (_, innerValue) => ((state = innerValue), innerValue))(source).subscribe(subscriber);
return () => {
state = null;
};
});
}
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